Bench block



J. J. McGUCKiN. BENCH BLOCK.

APPLICATION FILED MAR.16, 1921.

Patented Aug. 22, 1922.

MMQ

JOHN J'. McG-UCKIN, 0F BR-GOKLYN, NEW YORK, ASEIGNOR T0 LOUIS SCI-117115.13, OF NEW YORK, N. "55., DOING BUSINEtlS UNDER Nit-BEE QF 5%? COMPANY.

BENCH BLOCK.

Application filed March 16, 1921.

To all whom it may concern Be it known that 1, JOHN J. MoGUokrN, a citizen of the United States, residing at Brooklyn, Kings County, New York, have invented certain new and useful Improvements in Bench Blocks, of which the following is a specification.

My invention relates to bench blocks which are intended to be used by mechanics in straightening, testing, and truing articles,

and for other similar shop operations. My

improvements are directed particularly to means whereby a single bench block is made to combine facilities for performing several of the operations mentioned, in a more satis factory and accurate manner than has been possible with the blocks heretofore in use.

In the drawings, Fig. 1 is a perspective view of a bench block embodying my improvements; Fig. 2 is a perspective view of the same reversed; Fig. 3 is a cross sectional view taken as on the lines 3, 3 of Fig. 2, and showing a bar, or similar article, resting across the block; Fig. 4 is a view similar to 2, but with the highly polished plate and its fastenings removed; and Fig. 5 is a detail of the one of the fastening elements of the block.

Similar parts are referred to by similar reference numerals in all the figures.

The bench block 1 is provided with a leveled and, preferably, planed face 2, across which it is desirable to form a V groove 3, the use of which is well understood in the art. The face 2 is intended for use in the rougher grades of work, and is therefore, not highly polished or finished. t is. reinforced by a suitable flanged bridge work i, 5, 6; and it is provided with a marginal flange 7, 7, the bearing corners 8, 8 of which are, preferably, provided with V grooves 9, 9.

In the flanged bridge work are provided suitable anchor points, as the bosses 10, 10, which are shown as made integral with the bridge work, and as being taped and screw threaded at 11, to receive screw threaded bolts 12, 12, which are passed through holes in a highly polished plate 13, which plate is secured to the bridge work by the bolts; spring washers 14, or other suitable and yieldable packing being inserted between the plate and the bosses, and another washer or packing 15 being placed beneath the head of each bolt 12, so that the plate, while being held firmly and securely, is somewhat Specification of Letters Patent.

the plate 13.

Patented Aug. 2?), 1922.

Serial No. 452,739.

cushioned in its relation to the rest of the bench block, and is also susceptible of a slight vertical adjustment in relation thereto. The plate is shown as so proportioned the v grooves 9, 9 lie outside of the marginal edges of the plate; so that an article, for instance a rod 16, when supported in the grooves, will lie free of the edge of the plate, and may be straightened, or otherwise manipulated, without coming in contact with the plate; while, at the same time, the edge of the plate may be referred to as a sighting base by comparison with which the rod or other article may be approximately trued.

The edge flanges 7 are shown as provided with depressions 17, the surfaces of which are upon the same level as the upper face of the rod 16 is laid from 17 to 17, across the plate 13, asshown in Fig. 3, if the rod 16 is true, it will lie evenly upon the surfaces 17, 13, 17; and if there are any irregularities in its surface they may be detected by comparison with the plate 13, in the well known manner.

It will be seen, therefore, that in my improved bench block I secure not only a strong and approximately smooth surface 2, for use in the rougher kinds of work, but also a highly polished surface adapted for use in connection with delicate and accurate work, as well as means associated with the highly polished surface for holding articles free from that surface, but in such a position that they may be referred thereto in the process of truing them; and also means whereby such articles may be supported across the highly polished face of the plate in the process of accurately truing them by reference thereto. Besides this, the highly polished plate is susceptible of sufficient adjustment to allow it to be accurately trued in reference to certain testing points on the frame work of the block; and is cushioned sufficiently to moderate the jars and shocks which may be communicated to the face 2 of the plate when in use for comparatively rough work; so that the highly polished and comparatively thin plate 13 will not be injured by such shocks or jars; while the highlv polished plate is so disposed upon the frame work of the bench block that its surface, preferably, lies above the level of the supporting portions of the block when it is placed with the highly polished plate down,

So that if such an article as I wish to secure bythe Letters Patent of the departing from the scope and spirit of my invention as claimed. Having thus described my lnventlon, what United States, is

wroughly finished: working face and upon its reverse side with: "a supplementary plate pro- 1mAtesting and truing bench block provided upon one side with a. comparatively videdwith a. highly polishedv working face.

. 2.- 1%. testing. and'truing'bench: block pro vided upon one side with 'acomparatively roughly finished working :face'and upon the "reverse side with a supplementary plate. detachably attached thereto and provided withhighly polished working face.

a highly polished working face.

3.=.-Atestingr and truing bench block pro vided upon-one side with a comparativelyroughly finishedworking facewand upon the: :reverse side :witha supplementary plate adzjustably attaehedithereto and provided with 4 testing and truing bench block provided with a face plate adjustably secured thereto at a plurality of points.

5. A bench block provided with a face plate adjustably secured thereto, and with marginal elements extending beyond the plane of the face plate.

6. A bench block provided with a face I plate adjustably secured thereto, and with marginal elements having work seats therein and extendingbeyond the plane of the face plate.

v 7. 'I'n-abench block,the combination of a base having anintegral, marginal flange and integralreinforcingbridge work, and a face plate adjustably attached to said bridge work.

8. Ina bench block, the combination of a base having an integral, marginal flange and integral, reinforcing bridge work, and a :face plate adjustably and detachably at-- ta'ched to said bridge work.

: 9'. In abench block, the combination of a base haring an integral, marginal flange and integral, reinforcing bridge work, a face plate adjustably secured thereto, and shock absorbing means interposed between the bridge work and the face plate.

JOHN J. MQGUCKIN. 

